Support SciPy 1.14.

[vnmabus]

Describe the proposed changes

Fixed the code that was failing in the tests for Scipy 1.14:

• Calls to simpson with more than one positional parameters are invalid (DEP: integrate: switch simpson to kwarg-only, remove even kwarg scipy/scipy#20554).
• Representation of SciPy sparse matrix in doctests has changed (MAINT: sparse: reformat str and repr for sparse arrays, correct 1D coords, improve dtype looks scipy/scipy#20649).
  • As this change makes tests fail for previous SciPy versions, the minimum version of SciPy used for tests has been set to 1.14.

Checklist before requesting a review

• I have performed a self-review of my code
• The code conforms to the style used in this package
• The code is fully documented and typed (type-checked with Mypy)
• I have added thorough tests for the new/changed functionality

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.83%. Comparing base (da69655) to head (22e4618).
Report is 16 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #630   +/-   ##
========================================
  Coverage    86.83%   86.83%           
========================================
  Files          157      157           
  Lines        13522    13522           
========================================
  Hits         11742    11742           
  Misses        1780     1780           

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